CN101793042B - Hydraulic loop device used for coordinating machine body rotation and movable arm swinging of digging machine - Google Patents

Hydraulic loop device used for coordinating machine body rotation and movable arm swinging of digging machine Download PDF

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Publication number
CN101793042B
CN101793042B CN200910215454XA CN200910215454A CN101793042B CN 101793042 B CN101793042 B CN 101793042B CN 200910215454X A CN200910215454X A CN 200910215454XA CN 200910215454 A CN200910215454 A CN 200910215454A CN 101793042 B CN101793042 B CN 101793042B
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CN
China
Prior art keywords
valve
revolution
oil
swing arm
hydraulic
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CN200910215454XA
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Chinese (zh)
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CN101793042A (en
Inventor
张博友
胡学军
陈志强
张军荣
李兵
李小亮
张玮
夏金玲
曲海斌
胡月平
刘靖宇
周文涛
李亮宇
朱天利
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福田雷沃国际重工股份有限公司
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Priority to CN200910215454XA priority Critical patent/CN101793042B/en
Publication of CN101793042A publication Critical patent/CN101793042A/en
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Publication of CN101793042B publication Critical patent/CN101793042B/en

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Abstract

The invention discloses a hydraulic loop device used for coordinating machine body rotation and movable arm swinging of a digging machine, which belongs to a hydraulic loop device of the digging machine. The hydraulic loop device mainly comprises a hydraulic pump, a rotation motor, a movable arm oil cylinder, a rotation two-way hydraulic control reversing valve, a movable arm two-way hydraulic control reversing valve and a pilot control branch circuit, wherein a rotation manual pilot valve, a movable arm manual pilot valve, a shuttle valve and a one-way hydraulic control stop valve are arranged on the pilot control branch circuit, a first throttle valve is arranged between an oil inlet opening of the shuttle valve and an oil outlet opening of the rotation manual pilot valve, and a second throttle valve is arranged between an oil outlet opening of the shuttle valve and a work oil opening of the one-way hydraulic control stop valve. The invention solves the technical problems of low movable arm swinging speed and inconsistent movable arm swinging and machine body rotation action in the machine body rotation process of the digging machine. The invention has a reasonable structure, and can be widely applied to production and manufacture industry of the digging machine.

Description

Be used to coordinate the circuit apparatus for hydraulic of excavator base machine revolution and movable arm swinging

Technical field

The present invention relates to a kind of excavator circuit apparatus for hydraulic, relate in particular to a kind of circuit apparatus for hydraulic that is used to coordinate excavator base machine revolution and movable arm swinging.

Background technology

Excavator is to excavate with scraper bowl to be higher or lower than the material that holds machine side, and the haulage vehicle or unload earth moving plant to rickyard of packing into.Hydraulic crawler excavator mainly partly is made up of motor, circuit apparatus for hydraulic, equipment, running gear and electrical control etc.Circuit apparatus for hydraulic is made up of hydraulic pump, control valve, hydraulic cylinder, hydraulic motor, pipeline, fuel tank etc.Electrical control system comprises monitoring panel, engine control system, pump control system, various kinds of sensors, reversal valve etc.

Common in the market excavator mostly is a hydraulic crawler excavator, but problem of ubiquity, excavator in the course of the work, during body rotation, the swing arm hoisting velocity can slow down, revolution and the composite move that promotes are inharmonious, for example, when excavator carries out digging, need be in the process of body rotation the swing arm fast lifting, increasing work efficiency, but existing excavator all can not well be coordinated the composite move that body rotation and swing arm promote, because the needed pressure of body rotation is low, on working connection, the hydraulic oil of hydraulic pump output is preferentially supplied with body rotation, promotes operation thereby influenced swing arm, it is unable or not in place to make that swing arm promotes, and has a strong impact on operating efficiency.

Summary of the invention

Technical problem to be solved by this invention is: a kind of circuit apparatus for hydraulic that is used to coordinate excavator base machine revolution and movable arm swinging is provided, slow to solve excavator movable arm swinging speed in the body rotation process, the technical problem of movable arm swinging and body rotation exercise not harmony.

For solving the problems of the technologies described above, technical scheme of the present invention is: be used to coordinate the circuit apparatus for hydraulic of excavator base machine revolution and movable arm swinging, comprise hydraulic pump; Be used to control the rotating rotary motor of fuselage; Be used to control the boom cylinder of movable arm swinging; The hydraulic oil that described hydraulic pump is discharged flows to the two-way pilot operated directional control valve of revolution of rotary motor, the hydraulic oil of described hydraulic pump discharge is flowed to the two-way pilot operated directional control valve of swing arm of described boom cylinder; A revolution guide who is connected with the control port of the two-way pilot operated directional control valve of described revolution controls branch road, described revolution guide controls branch road and is provided with the manual pilot valve of revolution, and the manual pilot valve of described revolution has a left side revolution oil-out and a right-hand rotation oil-out; A swing arm guide who is connected with the control port of the two-way pilot operated directional control valve of described swing arm controls branch road, described swing arm guide controls branch road and is provided with the manual pilot valve of swing arm, and the manual pilot valve of described swing arm has a swing arm rising oil-out and a swing arm decline oil-out; Described revolution guide controls branch road and is provided with shuttle valve and unidirectional fluid-controlled cut-off valve, two oil-ins of described shuttle valve are communicated with two oil-outs of the manual pilot valve of revolution respectively, the oil-out of described shuttle valve is communicated with the actuator port of described unidirectional fluid-controlled cut-off valve, and the control port of described unidirectional fluid-controlled cut-off valve is communicated with the swing arm rising oil-out of the manual pilot valve of described swing arm; Be provided with the first throttle valve between the oil-out of the oil-in of described shuttle valve and the manual pilot valve of described revolution; Be provided with second choke valve between the oil-out of described shuttle valve and the actuator port of described unidirectional fluid-controlled cut-off valve.

As a kind of improvement, two-way pilot operated directional control valve of described revolution and the two-way pilot operated directional control valve of swing arm are three six logical pilot operated directional control valves.

As further improvement, described unidirectional fluid-controlled cut-off valve is the unidirectional pilot operated directional control valve of bi-bit bi-pass.

Owing to adopted technique scheme, the invention has the beneficial effects as follows: owing to designed unidirectional fluid-controlled cut-off valve, the manual pilot valve of swing arm, turn round manual pilot valve and shuttle valve, be provided with second choke valve between the oil-out of shuttle valve and the actuator port of unidirectional fluid-controlled cut-off valve, during work, when swing arm rises and revolution (left side revolution or right-hand rotation) when moving simultaneously, the pressure signal that swing arm rises makes unidirectional fluid-controlled cut-off valve transposition, the revolution pilot pressure signal that shuttle valve will retrieve is by second choke valve and unidirectional fluid-controlled cut-off valve oil sump tank, reduce the pressure of main valve revolution connection guide end, the flow that enters rotary motor is reduced, reduce speed of gyration.After guaranteeing that main valve revolution connection pilot pressure releases a part, the two-way pilot operated directional control valve pilot pressure of swing arm is unaffected, between the oil-out of the oil-in of shuttle valve and the manual pilot valve of revolution, be equipped with the first throttle valve, control the left and right rotating pressure of fuselage respectively, coordinated rotation pressure and swing arm pressure, made that swing arm promotes unaffected in the turning course.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is an embodiment of the invention hydraulic principle schematic diagram;

Among the figure: 1, the two-way pilot operated directional control valve of swing arm, 2, rotary motor, 3, turn round two-way pilot operated directional control valve, 4, unidirectional fluid-controlled cut-off valve, 5, boom cylinder, 6, the first throttle valve, 7, turn round manual pilot valve, 8, the manual pilot valve of swing arm, 9, second choke valve, 10, shuttle valve.

The specific embodiment

As shown in Figure 1, a kind of circuit apparatus for hydraulic that is used to coordinate excavator base machine revolution and movable arm swinging comprises hydraulic pump; Be used to control the rotating rotary motor 2 of fuselage; Be used to control the boom cylinder 5 of movable arm swinging; The hydraulic oil of described hydraulic pump discharge is flowed to the two-way pilot operated directional control valve 3 of revolution of rotary motor 2, the hydraulic oil that described hydraulic pump is discharged flows to the two-way pilot operated directional control valve 1 of swing arm of described boom cylinder 5, and two-way pilot operated directional control valve 3 of described revolution and the two-way pilot operated directional control valve 1 of swing arm are three six logical pilot operated directional control valves; A revolution guide who is connected with the control port of the two-way pilot operated directional control valve 3 of described revolution controls branch road, described revolution guide controls branch road and is provided with the manual pilot valve 7 of revolution, and the manual pilot valve 7 of described revolution has a left side revolution oil-out and a right-hand rotation oil-out; A swing arm guide who is connected with the control port of the two-way pilot operated directional control valve 1 of described swing arm controls branch road, described swing arm guide controls branch road and is provided with the manual pilot valve 8 of swing arm, and the manual pilot valve 8 of described swing arm has a swing arm rising oil-out and a swing arm decline oil-out; Described revolution guide controls branch road and is provided with shuttle valve 10 and unidirectional fluid-controlled cut-off valve 4, described unidirectional fluid-controlled cut-off valve 4 is the unidirectional pilot operated directional control valves of bi-bit bi-pass, two oil-ins of described shuttle valve 10 are communicated with two oil-outs of the manual pilot valve 7 of revolution respectively, the oil-out of described shuttle valve 10 is communicated with the actuator port of described unidirectional fluid-controlled cut-off valve 4, and the control port of described unidirectional fluid-controlled cut-off valve 4 is communicated with the swing arm rising oil-out of the manual pilot valve 8 of described swing arm; Be provided with first throttle valve 6 between the oil-out of the oil-in of described shuttle valve 10 and the manual pilot valve 7 of described revolution; Be provided with second choke valve 9 between the actuator port of the oil-out of described shuttle valve 10 and described unidirectional fluid-controlled cut-off valve 4.

Its course of work is as follows:

When excavator begins operation under the driving of dynamical system, the operating mode more complicated, for example when digging, need body rotation and swing arm to promote the multiple working of action simultaneously, the hydraulic oil of hydraulic pump output is transported to rotary motor 2 and boom cylinder 5 respectively through two-way pilot operated directional control valve 3 of revolution and the two-way pilot operated directional control valve 1 of swing arm under pressure P 1 effect, in order to make body rotation and swing arm promote coordination, need open amount by guide's hydraulic circuit control two-way pilot operated directional control valve 3 of revolution and the two-way pilot operated directional control valve 1 of swing arm.At this moment, pull the joystick of the manual pilot valve 8 of swing arm, the pressure signal that swing arm rises makes unidirectional fluid-controlled cut-off valve 4 transpositions, the revolution pilot pressure signal that shuttle valve 10 will retrieve is by second choke valve 9 and unidirectional fluid-controlled cut-off valve 4 oil sump tanks, reduce the pressure of the two-way pilot operated directional control valve 3 guides end of revolution, the flow that enters rotary motor 2 is reduced, reduce speed of gyration.Owing to respectively be provided with a first throttle valve 6 between the guide of two oil-outs of the manual pilot valve 7 of revolution and the two-way pilot operated directional control valve 3 of revolution holds, control the left and right rotating pressure of fuselage respectively, balance rotation pressure and swing arm pressure, avoided the hydraulic oil of working connection preferentially to supply with rotary motor, after making that two-way pilot operated directional control valve 3 pilot pressures of revolution release a part, the swing arm pilot pressure is unaffected, has improved operating efficiency.

The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within protection scope of the present invention.

Claims (3)

1. be used to coordinate the circuit apparatus for hydraulic of excavator base machine revolution and movable arm swinging, comprise
Hydraulic pump;
Be used to control the rotating rotary motor of fuselage;
Be used to control the boom cylinder of movable arm swinging;
The hydraulic oil that described hydraulic pump is discharged flows to the two-way pilot operated directional control valve of revolution of rotary motor, the hydraulic oil of described hydraulic pump discharge is flowed to the two-way pilot operated directional control valve of swing arm of described boom cylinder;
A revolution guide who is connected with the control port of the two-way pilot operated directional control valve of described revolution controls branch road, described revolution guide controls branch road and is provided with the manual pilot valve of revolution, and the manual pilot valve of described revolution has a left side revolution oil-out and a right-hand rotation oil-out;
A swing arm guide who is connected with the control port of the two-way pilot operated directional control valve of described swing arm controls branch road, described swing arm guide controls branch road and is provided with the manual pilot valve of swing arm, and the manual pilot valve of described swing arm has a swing arm rising oil-out and a swing arm decline oil-out; It is characterized in that:
Described revolution guide controls branch road and is provided with shuttle valve and unidirectional fluid-controlled cut-off valve, two oil-ins of described shuttle valve are communicated with two oil-outs of the manual pilot valve of revolution respectively, the oil-out of described shuttle valve is communicated with the actuator port of described unidirectional fluid-controlled cut-off valve, and the control port of described unidirectional fluid-controlled cut-off valve is communicated with the swing arm rising oil-out of the manual pilot valve of described swing arm;
Be provided with the first throttle valve between the oil-out of the oil-in of described shuttle valve and the manual pilot valve of described revolution;
Be provided with second choke valve between the oil-out of described shuttle valve and the actuator port of described unidirectional fluid-controlled cut-off valve.
2. the circuit apparatus for hydraulic that is used to coordinate excavator base machine revolution and movable arm swinging as claimed in claim 1 is characterized in that:
Two-way pilot operated directional control valve of described revolution and the two-way pilot operated directional control valve of swing arm are three six pass two-way pilot operated directional control valves.
3. the circuit apparatus for hydraulic that is used to coordinate excavator base machine revolution and movable arm swinging as claimed in claim 1, it is characterized in that: described unidirectional fluid-controlled cut-off valve is the unidirectional pilot operated directional control valve of bi-bit bi-pass.
CN200910215454XA 2009-12-31 2009-12-31 Hydraulic loop device used for coordinating machine body rotation and movable arm swinging of digging machine CN101793042B (en)

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CN200910215454XA CN101793042B (en) 2009-12-31 2009-12-31 Hydraulic loop device used for coordinating machine body rotation and movable arm swinging of digging machine

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Application Number Priority Date Filing Date Title
CN200910215454XA CN101793042B (en) 2009-12-31 2009-12-31 Hydraulic loop device used for coordinating machine body rotation and movable arm swinging of digging machine

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CN101793042B true CN101793042B (en) 2011-12-07

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JP5797061B2 (en) * 2011-08-24 2015-10-21 株式会社小松製作所 Excavator
CN102400476B (en) * 2011-10-28 2013-08-21 山河智能装备股份有限公司 Hydraulic circuit controlling preferred movement of moveable arm to lift or rotate
WO2013169996A1 (en) * 2012-05-10 2013-11-14 Eaton Corporation Load energy assist and horsepower management system
CN102720232B (en) * 2012-06-15 2014-10-29 江苏柳工机械有限公司 Damping device of swing arms of slipping steering loaders
CN102808433B (en) * 2012-08-13 2014-07-16 山河智能装备股份有限公司 Hydraulic circuit and method for controlling compound actions of excavator movable arm
CN103047204B (en) * 2013-01-05 2015-06-17 中联重科股份有限公司 Engineering machine and hydraulic control operation system and hydraulic control operation method thereof
CN103161191A (en) * 2013-03-13 2013-06-19 福田雷沃国际重工股份有限公司 Control oil line and control method of independent rotation speeding down of excavator
CN103410803B (en) * 2013-08-13 2015-11-25 常德中联重科液压有限公司 The hydraulic control system of pilot operated directional control valve, coordinated signals hydraulic system and excavator
KR20170026445A (en) * 2014-07-03 2017-03-08 스미도모쥬기가이고교 가부시키가이샤 Shovel and Method for Controlling Shovel
CN104481958B (en) * 2014-11-10 2017-08-15 广西柳工机械股份有限公司 A kind of confluence selection function pilot operated valve device and loading machine determine variable delivery hydraulic system
CN105386477B (en) * 2015-10-30 2017-11-21 徐州徐工挖掘机械有限公司 Swing arm declines the device of energy absorption during a kind of excavator composite move
CN105761605A (en) * 2016-05-09 2016-07-13 常州机电职业技术学院 Hydraulic practical training table for engineering machines
CN106884455B (en) * 2017-03-08 2019-05-28 青岛雷沃工程机械有限公司 Operating condition self-adaptive hydraulic circuit and excavator
CN107201758B (en) * 2017-06-15 2020-09-11 柳州柳工挖掘机有限公司 Hydraulic system of excavator

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CN1129964A (en) * 1994-06-28 1996-08-28 日立建机株式会社 Hydraulic circuit apparatus for hydraulic excavators
EP1452743A1 (en) * 2001-11-05 2004-09-01 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit device of hydraulic working machine
CN101120142A (en) * 2005-02-17 2008-02-06 沃尔沃建造设备控股(瑞典)有限公司 Apparatus and method for controlling work vehicle
CN201620434U (en) * 2009-12-31 2010-11-03 福田雷沃国际重工股份有限公司 Hydraulic circuit device for coordinating body rotation and movable arm swing of digging machine

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CN1129964A (en) * 1994-06-28 1996-08-28 日立建机株式会社 Hydraulic circuit apparatus for hydraulic excavators
EP1452743A1 (en) * 2001-11-05 2004-09-01 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit device of hydraulic working machine
CN101120142A (en) * 2005-02-17 2008-02-06 沃尔沃建造设备控股(瑞典)有限公司 Apparatus and method for controlling work vehicle
CN201620434U (en) * 2009-12-31 2010-11-03 福田雷沃国际重工股份有限公司 Hydraulic circuit device for coordinating body rotation and movable arm swing of digging machine

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Effective date of registration: 20140902

Address after: 266500, No. 75 east the Yellow River Road, Huangdao economic and Technological Development Zone, Qingdao, Shandong

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Address after: 266500, No. 75 east the Yellow River Road, Huangdao economic and Technological Development Zone, Qingdao, Shandong

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Address before: 266500, No. 75 east the Yellow River Road, Huangdao economic and Technological Development Zone, Qingdao, Shandong

Patentee before: QINGDAO LEIWO EXCAVATOR CO., LTD.

Address after: 266500, No. 75 east the Yellow River Road, Huangdao economic and Technological Development Zone, Qingdao, Shandong

Patentee after: Qingdao leiwo Engineering Machinery Co. Ltd.

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Address after: 266500, No. 75 east the Yellow River Road, Huangdao economic and Technological Development Zone, Qingdao, Shandong

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